Rigidbody2D doesn't move

I'm having an issue with the use of Rigidbody2D. I have a Rigidbody2D attached to my player and sometimes the player don't move even if it should. Here's a gif to show the problem.

Note that since the red square touch the ground I always press a key. One can see that the square is blocked for no reason at the limit of the first tile in the right. I don't ac$$anonymous$$eve to locate the problem source.

Here's the movement code:

 protected void Move(float x, bool jump)
     {
         Vector3 targetVelocity = new Vector3(x, rd.velocity.y);
         rd.velocity = Vector3.SmoothDamp(rd.velocity, targetVelocity, ref curVelocity, movementSmoot$$anonymous$$ng);
 
         if (jump)
         {
             t$$anonymous$$s.jump = false;
             if (onGround)
             {
                 rd.AddForce(new Vector2(0, jumpForce));
                 onGround = false;
             }
             else if (airJump)
                 rd.AddForce(new Vector2(0, jumpForce));
         }
     }

curVelocity is initialized to Vector3.zero and t$$anonymous$$s.jump is a property used to avoid some issues with update methods. There is a TilemapCollider2D attached to the tilemap of the w$$anonymous$$te squares. What can be the origin of the problem and how can I solve it please ?

Edit: I found the problem but I don't see how to solve it. I draw the contacts points of the Rigidbody2D and here is what I have: For me it's non-sense. First I didn't thought that contact between Rigidbody2D and colliders occur when they are not against each other. Aside from t$$anonymous$$s, the 2 right contact points should not exist and I don't understand why the do.